Tympanic part
Pars tympanica
- Related terms: Tympanic part of temporal bone
Definition
The tympanic part of the temporal bone is located in the caudoventral region of the cranium.
It surrounds and protects the structures of the middle ear, mainly participating in the formation of the tympanic bulla, a bony cavity containing the tympanic cavity and the auditory ossicles. The tympanic part also contributes to the formation of the bony external acoustic meatus, ensuring the transmission of sound vibrations to the eardrum.
Variation:
In carnivores, it is generally very well developed and their tympanic bulla is very large.
In equids and ruminants, it is smaller.
References
Barone R. Anatomie comparée des mammifères domestiques, Tome 1, Ostéologie, 5th edition, Vigot, Paris, 2017.
Constantinescu GM, Schaller O. Illustrated veterinary anatomical nomenclature, 3rd Edition, Enke Verlag, Stuttgart, 2012.
König HE, Lieibich HG. Veterinary Anatomy of Domestic mammals, 6th edition, Schattauer, Stuttgart, 2014.
